During our April meeting while discussing the bridge in Tama, we had a conversation about James Marsh and his Rainbow Arch Bridge designs along the Lincoln Highway. So I reached out to our resident experts, Bob and Joyce Ausberger for a history lesson on these bridges and their significance to the Lincoln Highway.
James Marsh was the builder and promoter of several Rainbow Arch Bridges. He graduated from Iowa State University with a degree in Mechanical Engineering. His company was N.E. Marsh & Son Construction Company in Des Moines. The bridge designs were formed by the conjunction of new technology, and reinforced concrete. The previous stone bridges were more expensive and labor-intensive.
By 1893 Marsh had constructed numerous bridges in Iowa – a three-mile elevated railroad structure in Sioux City and three bridges in Des Moines. Similar bridges were built in Montana, South Dakota, Minnesota, Colorado, and five other western states.
The Marsh Rainbow Arch Bridge (known as Beaver Creek Bridge) is located on the Lincoln Highway on the border of Greene and Boone County in Ogden at 210th Street and was built in 1919. This bridge was listed on the National Register of Historic Places in 1998.
Numerous single-span concrete arches can be found in rural Iowa, but multiple-span examples are rare. Moreover, among those concrete arches remaining in the state, the Eureka Mill Bridge is one of the earliest such arch structures designed by the state highway commission. We are fortunate to have these existing samples of these two types of bridges still remaining
This article was reprinted with permission from the Iowa Lincoln Highway Association Summer 2022 Newsletter, Volume 27, No, 2.